CVE-2015-8710

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-04-11 · updated 2026-06-17
Weakness: CWE-119

Description

The htmlParseComment function in HTMLparser.c in libxml2 allows attackers to obtain sensitive information, cause a denial of service (out-of-bounds heap memory access and application crash), or possibly have unspecified other impact via an unclosed HTML comment.

Affected products

Debian Linux: 7.0, 8.0, 9.0
xmlsoft libxml2: before 2.9.3 — fixed in 2.9.3

How to fix

Upgrade to a fixed version: xmlsoft libxml2 2.9.3. Check the vendor advisory for mitigations.

References

http://rhn.redhat.com/errata/RHSA-2016-1089.html
http://www.debian.org/security/2015/dsa-3430
http://www.openwall.com/lists/oss-security/2015/04/19/4
http://www.openwall.com/lists/oss-security/2015/09/13/1
http://www.openwall.com/lists/oss-security/2015/12/31/7
http://www.securityfocus.com/bid/79811
https://bugzilla.gnome.org/show_bug.cgi?id=746048
https://git.gnome.org/browse/libxml2/commit/?id=e724879d964d774df9b7969fc846605aa1bac54c
https://hackerone.com/reports/57125#activity-384861
http://rhn.redhat.com/errata/RHSA-2016-1089.html
http://www.debian.org/security/2015/dsa-3430
http://www.openwall.com/lists/oss-security/2015/04/19/4

Get alerted when CVE-2015-8710 or the next vulnerability affects your stack